The blue bottom part, where the probe is, what are its dimensions? How thick it is?

The bottom of the blue probe is 3/4" and the probe is tapered. Near the top it is 7/8". The top of the probe around the seal is 1".

I received the tester but when I turn it on ,its reading is r1.2. Is that correct before I test the water reading.

Yes, it's fine. The r1.2 is the software's version number.

What is the settling time for the ORP meter in weak redox solution such as tap water? 20 seconds, 1 minute, hours for stable reading?

I can usually get a nice steady usable reading within 1 minute. If I'm being picky about the accuracy, I'll wait about 5 minutes. If I'm just trying to make a point on showing the antioxidant or oxidating potential of drinking water then I'm looking at about 20-30 seconds per sample of drinking water.

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Apera Instruments Premium Line ORP60 Pocket ORP Tester Kit, Replaceable Probe, 1 mV/±0.2% F.S Accuracy, ±1000 mV Range

Product ID: 40991318

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Details

Brand
Apera
Special Feature
Water
Age Range (Description)
Adult
Included Components
Apera ORP60
Outer Material
Plastic
Specification Met
CE ISO 9001

📊±1000 mV Range

📏1 mV Accuracy

🔋Replaceable Probe

Description

🔍 Measure with Confidence: Your ORP Game Changer!

SMART MEASUREMENT - Auto recognition of stable values for consistent results.
SUSTAINABLE DESIGN - Easily replace the probe without needing a new meter.
USER FRIENDLY DISPLAY - Large LCD with backlit colors for easy reading in any light.
COMPLETE KIT CONVENIENCE - Includes everything you need in a portable carrying case.
PRECISION AT YOUR FINGERTIPS - Experience unparalleled accuracy with a platinum ORP sensor.

The Apera Instruments Premium Line ORP60 Pocket ORP Tester Kit features a platinum ORP sensor for high measurement accuracy, a replaceable probe for sustainability, and a user-friendly design with a large LCD display. This complete kit includes calibration solutions and is perfect for professionals seeking reliable and precise measurements.

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